Schedule II: Valuation And Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Schedule II: Valuation And Qualifying Accounts [Abstract]
Balance At Beginning Of Year	$ 1,200	$ 1,300	$ 1,400
(Additions) Reductions to Income	(80)	70	(10)
Additions to (Deductions from) Reserves	(20)	(170)	(90)
Balance At End Of Year	$ 1,100	$ 1,200	$ 1,300